Balance and per diem interest required to satisfy the existing mortgage(s), and deponent has every reason to believe that the letter is correct in all respects,. Depending on your lender, you may have to sign in to an online account, call a helpline, or send a formal letter to start the request process.The first step is to get in touch with your lender or loan servicer. You can find their contact information on your monthly statements. To get a payoff letter, ask your mortgage lender for an official payoff statement and let them know what the projected closing date is. By including a per diem amount in the letter, the parties will not have to execute another payoff letter if the termination date. It typically details the principal balance, interest due as of that date, per diem, any late fees, etc. Showing the mortgage balance and per diem interest required to satisfy the. A payoff letter provides instructions on how to pay off a loan with a lump sum before the loan term ends. Learn how payoff letters work.